-ous bbbb bbbs bbws bobb bobo bobs bobu bobw boko boks boku boob book boos boow booz bosk boso boss bosu bouk bous bouw bowk bows bozo bsos bubb bubo bubs bubu bukk buko buku busk buss busu buus buuz buzz bzou bzow bzzz k-os kbbb kbbk kbbo kbbs kbbu kbbw kbbz kbkb kbkk kbko kbkw kbkz kbob kbok kboo kbos kbow kboz kbsb kbsk kbso kbss kbsu kbsw kbsz kbub kbuk kbus kbuu kbuw kbuz kbwb kbww kbwz kbzo kbzs kbzu kbzz kkbb kkbo kkbs kkbz kkkk kkob kkoo kkow kkoz kkss kksu kksw kkus kkuu kkwb kkwk kkws kkzu kkzz kobb kobk kobo kobs kobu kokb kokk koko koks koku kokz koob kook kooo koos koou kooz kos- kosb koso koss kosu kosz koub kous kouu kouw kowb kowz kozb kozk kozo kozu ksbs ksbw ksbz kskb kskk ksko ksks ksku kskz ksob ksok ksoo ksos ksou ksow ksso ksss kssu kssz ksub ksuu ksuw kswb kswo ksws ksww kubb kubo kubs kubu kukk kuks kuku kuok kuoo kuos kuow kusb kuso kusu kusw kuub kuuk kuuu kuuz kuws kuww kuwz kuzu kuzz kwbu kwbw kwbz kwkb kwkk kwkw kwkz kwok kwos kwow kwoz kwsk kwso kwss kwsu kwsw kwub kwuz kwwk kwws kzbb kzbk kzbs kzbz kzks kzkz kzoo kzoz kzsb kzsu kzus kzuu kzuw kzuz kzwb kzzb kzzk kzzo kzzs kzzz obbo obkb obok obos obss obus okko okok okso okus ooku oooo ooos oous osku osoo osos osow ossb osso ossu oubs ouu- ouzo owow s-os sbbs sbus skow skss skws sobo sobs sobu sokk soko soku sook soos soso soss souk sous sowk sows soz- sssb ssss ssws sub- subb subo subs subz suks suku suos sus- susk suso suss susu susz suus suwu suzo suzu suzz swbs swbw swob swoo swow swss szob szss ubbo ubos ukko ukok uksw us-k usbs usos ussb usss ussu usus uuuu uzos wbbb wbbk wbbo wbbs wbbw wbbz wbkb wbkk wbko wbks wbku wbkw wbkz wbob wbok wbos wbow wboz wbsb wbss wbsu wbsw wbsz wbuk wbus wbuw wbuz wbwb wbwo wbwz wbzo wbzs wbzu wbzw wbzz wkbk wkbo wkbu wkbw wkbz wkkb wkko wkks wkkw wkkz wkok wkoo wkos wkow wkoz wksb wksk wkso wkss wksu wksw wksz wkub wkws wkwz wkzb wkzk wkzo wkzs wkzu wkzw wkzz wobb wobo wokb wokk woko woks woku wokw wokz woob wook woos woow wooz woso woss wosu wosw woub wouk wous wouw wowb wowo wows woww wowz wozk wozz wsbb wsbk wsbs wsbu wsbw wsbz wskb wskk wsko wsku wskw wskz wsob wsok wsoo wsos wsou wsss wssu wssw wsus wsuw wswb wsws wsww wubb wubu wubz wukb wuks wukz wusb wuso wuss wusu wusw wusz wuub wuuu wuzu wuzz wwbb wwbu wwbz wwkb wwks wwku wwkz wwos wwow wwoz wwsb wwsk wwss wwsu wwus wwuz wwwk wwws wwww wwwz wwzw wwzz wzbb wzbk wzbo wzbz wzkb wzko wzks wzkw wzkz wzob wzok wzoo wzoz wzsk wzus wzuu wzww wzwz wzzb wzzo wzzs wzzu wzzw wzzz zbus zobo zoku zoo- zook zoos zoso zoss zouk zozo zozu zsss zubo zubu zuko zuoz zuuk zuzu zwoz zzzs zzzz